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diff --git a/dom/media/webaudio/test/test_notAllowedToStartAudioContextGC.html b/dom/media/webaudio/test/test_notAllowedToStartAudioContextGC.html
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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test GC for not-allow-to-start audio context</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+SimpleTest.requestFlakyTimeout(`Checking that something does not happen`);
+
+SimpleTest.waitForExplicitFinish();
+
+var destId;
+
+function observer(subject, topic, data) {
+ let id = parseInt(data);
+ ok(id != destId, "dropping another node, not the context's destination");
+}
+
+SpecialPowers.addAsyncObserver(observer, "webaudio-node-demise", false);
+SimpleTest.registerCleanupFunction(function() {
+ SpecialPowers.removeAsyncObserver(observer, "webaudio-node-demise");
+});
+
+SpecialPowers.pushPrefEnv({"set": [["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+ ["media.autoplay.blocking_policy", 0]]},
+ startTest);
+
+function startTest() {
+ info("- create audio context -");
+ let ac = new AudioContext();
+
+ info("- get node Id -");
+ destId = SpecialPowers.getPrivilegedProps(ac.destination, "id");
+
+ info("- trigger GCs -");
+ SpecialPowers.forceGC();
+ SpecialPowers.forceCC();
+ SpecialPowers.forceGC();
+
+ info("- after three GCs -");
+
+ // We're doing this async so that we can receive observerservice messages.
+ setTimeout(function() {
+ ok(true, `AudioContext that has been prevented
+ from starting has correctly survived GC`)
+ SimpleTest.finish();
+ }, 1);
+}
+
+</script>
+</pre>
+</body>
+</html>